fireball/lib/helpers/Box3Helper.js

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2018-12-25 13:59:22 +00:00
/**
* @author WestLangley / http://github.com/WestLangley
*/
import { LineSegments } from '../objects/LineSegments.js';
import { LineBasicMaterial } from '../materials/LineBasicMaterial.js';
import { BufferAttribute } from '../core/BufferAttribute.js';
import { Float32BufferAttribute } from '../core/BufferAttribute.js';
import { BufferGeometry } from '../core/BufferGeometry.js';
import { Object3D } from '../core/Object3D.js';
function Box3Helper( box, hex ) {
this.type = 'Box3Helper';
this.box = box;
var color = ( hex !== undefined ) ? hex : 0xffff00;
var indices = new Uint16Array( [ 0, 1, 1, 2, 2, 3, 3, 0, 4, 5, 5, 6, 6, 7, 7, 4, 0, 4, 1, 5, 2, 6, 3, 7 ] );
var positions = [ 1, 1, 1, - 1, 1, 1, - 1, - 1, 1, 1, - 1, 1, 1, 1, - 1, - 1, 1, - 1, - 1, - 1, - 1, 1, - 1, - 1 ];
var geometry = new BufferGeometry();
geometry.setIndex( new BufferAttribute( indices, 1 ) );
geometry.addAttribute( 'position', new Float32BufferAttribute( positions, 3 ) );
LineSegments.call( this, geometry, new LineBasicMaterial( { color: color } ) );
this.geometry.computeBoundingSphere();
}
Box3Helper.prototype = Object.create( LineSegments.prototype );
Box3Helper.prototype.constructor = Box3Helper;
Box3Helper.prototype.updateMatrixWorld = function ( force ) {
var box = this.box;
if ( box.isEmpty() ) return;
box.getCenter( this.position );
box.getSize( this.scale );
this.scale.multiplyScalar( 0.5 );
Object3D.prototype.updateMatrixWorld.call( this, force );
};
export { Box3Helper };